Fixed Source Map generation when multiple input/output paths are used.

[mkempe]

Hey there,

first of all, many thanks for the plugin.

Could you please look over gabrielgrant/broccoli-less-single#28 and give feedback, this probably fixes #32 and makes

lessOptions: {
  mergeTrees: {
    overwrite: true
  }
}

no longer necessary.

Thanks.

Maik

PS: If the pull request is accepted, i will make a pull request, which bumps the version of ember-cli-less and updates the README.

[knownasilya]

Could you create the PR now, based on your PR branch, so we can test ahead of time? Then it could be updated to change to the new version of less-single.

[mkempe]

Hey Ilya,

thanks for your feedback. I created the PR and close this issue.